Illumination unit



FIG. 1 is a bottom, front, right side perspective view of an illumination unit showing a first embodiment of our new design;

FIG. 2 is a top, front, left side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a left side sectional view thereof, the section taken through line 9 shown in FIG. 8;

FIG. 10 is a bottom, front, right side perspective view showing a second embodiment thereof;

FIG. 11 is a top, front, left side perspective view of the second embodiment of FIG. 10;

FIG. 12 is a front elevational view of the second embodiment of FIG. 10;

FIG. 13 is a rear elevational view of the second embodiment of FIG. 10;

FIG. 14 is a left side elevational view of the second embodiment of FIG. 10;

FIG. 15 is a right side elevational view of the second embodiment of FIG. 10;

FIG. 16 is a top plan view of the second embodiment of FIG. 10;

FIG. 17 is a bottom plan view of the second embodiment of FIG. 10; and,

FIG. 18 is a left side sectional view of the second embodiment of FIG. 10, the section taken through line 18 shown in FIG. 17.

The broken lines illustrate portions of the illumination unit that form no part of the claimed design. The dash-dot-dash lines shown in the figures (including FIGS. 1-3, 5-6, 8-12, 14-15, and 17-18) define boundaries of the claimed design and form no part of the claimed design. 

CLAIM The ornamental design for an illumination unit, as shown and described. 